alt Hacker Newsmaybe I'm misremembering the dimensions of the 8.
I did, however, take a series of photos comparing the Mini to the SE- and the packaging of the 6 (I think I gave the phone away but still had the box).
https://imgur.com/a/iphone-mini-vs-iphone-5-vs-iphone-6-case...
https://www.apple.com/iphone/compare/?modelList=iphone-13-mi...
The SE was the one that shared the 8's dimensions, the Mini was smaller than both. That Mini appears to be in a case, so the comparison photos aren't as useful as they'd be otherwise.
(Also, it looks like I couldn't do arithmetic earlier or typo'd the number, the Mini is 0.12" narrower, not 0.13").